Auxiliary leaf-spring for motor-vehicles.



H. D. F. HILLIARD. AUXILIARY LEAF SPRING FOR MOTOR VEHICLES. APPLICATION FILED OCT. K1916. RENEWED JAN. 28, I919.

v 1,297,167, Patented Mar/11, 1919.

sidel ne HARRY n. s. HILLIARD, on xenses CITY, mmsns, ASS fi-N'OR TO F. n wmsnow, or

CARMEN, omniscient.

Specification of Letters Patent.

Patented Mar. 11, 1919.

Application filed ()ctoher 7, 15316, Serial No. 124,296. Renewed January 28, 1918. Serial No. 274,179.

To all whom it may concern:

Be it known thct'L HARRY D. F. HILL- irlno, a citizen of the United States, residing at Kansas City, in the county of Wynndotte and State of Kansas, have invented certain new and useful Improvements in Auxiliary Leaf-Springs for Motor-Vehicles and I do hereby declare the following to he a, full, clear, and exact description of the invention, such as Will enable others skilled in the art to which it appertains to make and use the some.

This invention relates to new and useful improvements in auxiliary leaf springs for motor ehicies and the principal object of the invention is to provide at spring which is adapted to be attached to the ordinary spring suspension of the vehicle in order to improve the riding qualities thereof and relieve the chassis and the body of much of the strain due to travel over rough roads.

Another object of the invention is to provide e. shoclr absorber or auxiliary spring of the ceiiteliver type which is arranged to be connected. to the end of the main vehicle sprin to the running gear without meterially changing: or modifying the construction of the vehicle.

A still further object of the invention is to provide an auxiliary spring which is roclnioly mounted on the axle of the vehicle and has its opposite end slidahly connected to the main vehicle spring in such e' way that when 7 the main spring tends to straighten the end of the auxiliary spring will be fre to move over the main spring thereby chmrlnng much of the iorce lvhich would ordinarily be transmitted to the main spring in the longitudinal movement.

A still further object of the invention is to provide an auxiliezy spring which is urr'zinged to counteract the rebound of the main spring thus making a smoother riding structnr I With these and other objects in view the invention consists in'the novel combination and arrangement of parts which will be fully set forth. in the following si'iecificntion and accompanying drmving, in which 1-- Figure l 21 front elevation of a portion of a motor vehicle showing this auxiliary leaf spring applied thereto, and

i2 is an enlarged sectional view on line of Fig. l.

Referring to the drawing, the numeral 1 taken v designates the axle of the vehicle provided 7 near opposite ends with the sockets 2. The main vehicle spring is designated by the numere] 3 and is connected centrally to the vehicle body 4 while the ends of said spring; are positioned directly over the axle 1 and in close proximity to the sockets 2. Seated in the sockets 2 arethe perches 5 consisting of the standards 6 formed intermediate their ends with shoulders 7 and at their lower ends with suitable threads on which the nuts 8 are threaded. The upper ends of the standards are provided with apertured enlargements J and right :mgulnrly extendingnrnis 10, the use or" which will appear as the description proceeds.

The spring 3 is formed near opposite ends with loops 11 for the reception of suitable bolts -2 by means of which the links 13 are pivot-ally connected thereto. These links 13 are formed near the end opposite that which is connected to the bolts 12 with suitable apertures 14 for the reception of bolts 15 forming the connection of the main spring with the auxiliary spring The auxiliary spring is designated generally by the numeral 16 and comprises a, main or bottom leaf 1'? which tapers toward one end and is provided adjacent its larger end with pair of downturned cars 18 which are formed integrally therewith and provided with apertures for the reception of the pivot bolts 19 which extend through the apertures in thehced 9 and form a pivotal connection of the auxiliary spring with the perch. end of the main leaf 1'? is extended as at 20 1nd cooperates with the arm 10 in niodifym the rebound of the spring structure.

fhe forward or reduced end of the leaf 1'? is formed with a pair of downturned ears 21, the lower ends of .which are connected by a bolt 22 which coiiperntes With-said ears in forming a yoke for completely surroitndiug the main spring 3. A'holt 24: extends through the cars 21 near the point where they join leef 17 and a roller is mounted on the bolt 24: to engcge the upper side of the main spring 3. ltlwill thus be seen that under normal conditions, the bolt 22 is spaceddownwardly from the bottom leaf of the main spring 3 so that the straightening of said i nin spring will allow the yoke to move freely toward the central or enlarged portion of spring in absorbing the energy of the rebound. 1 spring lest 26 is posi tionecl on the upper side of the spring leaf 17 and a plat 27 is superimposed upon the leaf 26 near the larger end of the leaf 1? Which'plates extends beyond the side edges of the leaves and is apertni'ed to'receive the arms of the U-bolts 28 the bight portions of which extend beneath the leaf fiend en-- gage the lugs 29 formed at the base of the standard 30, the lower end of which is aperturecl to receive the bolts 15 so as to provide a pivotal connection between the end of the main spring 3 and the intermediate portion of the auxiliary spring 16.

It Will be apparent from the foregoing that in use, when thelaxle 1 moves upwardly under the force of the impact of the whee of the vehicle against an obstacle in 2L IOKlway it will be seen that the spring 16 will tend to rock on the pivot bolt 19 and such rocking action will cause the yoke formed by the ears 21 and the bolt 22 to move toward the centerof the main spring 3 218 said main spring will tend to straighten and thus the road shock will be distributed through the vii -ions movements of the spring. Upon the rebound of the springs it will be seen that the extension 20 of the spring 16 n. Contact with the arm 10 of the perch 5 2 thus the shock will be absorbed to e z-itent.

shown and describe the piif l inent of this invention, it is to be understood that such changes may he made in the combination and ports as will fall within the spirit scope of the invention as claimed.

twist is chiiineci is:

The combination with an axie 1' tending npmmrdiy from the J opposite ends thereof, at bow insin spii positioned directly we nnl dlk'i'lS extending outwardly from perches toward the ends e, auxiliary springs each con 11min eziirs formed the me e ch iliaii spring 111i L'lOWXD y therefrom, pivots oonnec ng the to perches, ears extendin from each an nary spring e e opposite that which is piitoteliy connected to t e perches, roller mounted between the last mentioned are and bearing on the uppei side of the main spring, and an extension 0 each auxiliary n signing for cooperation with the arm on its respective perch to retard iehonntl. 

